Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Histological Effects of Fishery By-product Fermented Fishmeal on the Liver and Muscle of the Olive Flounder Paralichthys olivaceus

수산부산물 발효어분이 넙치(Paralichthys olivaceu)의 간 및 근육에 미치는 영향에 관한 조직학적 연구

  • Lee, Bo-Ram (School of Chemistry and Life Sciences, Kyungsung University) ;
  • Kim, Ji-Hye (School of Chemistry and Life Sciences, Kyungsung University)
  • 이보람 (경성대학교 화학생명과학부) ;
  • 김지혜 (경성대학교 화학생명과학부)
  • Received : 2019.08.08
  • Accepted : 2019.11.11
  • Published : 2019.11.30
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Abstract

The aim of this study was to clarify histologically the effects of fermented fishmeal on the growth rate of fish. For this purpose, olive flounders were fed on fermented fishmeal at the substitution ratios of 0, 25, 50, 75, and 100%, and the effects on the liver and muscle were examined by microscopy. The olive flounder fed on fermented fishmeal at the 25% substitution ratio had the best hepatic condition, as indicated by the highest hepatosomatic index and the lowest fatty liver level, when compared with fish fed the other substitution ratios. The olive flounder fed on fermented fishmeal at the 25% substitution ratio had good motility, based on the presence of wide myocytes. The high growth rate in the olive flounder fed on fermented fishmeal at the 25% substitution ratio therefore seemed to be related to the health status of the liver and muscles. Higher amounts of the fermented fishmeal (75% and 100% substitution ratios) suppressed the growth rate due to adverse effects on hepatic function and motility of the olive flounder.

본 연구에서는 발효어분이 넙치의 증체율에 미친 조직학적 영향을 규명하기 위하여 수입어분에 대한 발효어분의 대체비율 0, 25, 50, 75 및 100%로 사육한 넙치로부터 간 및 근육을 적출하여 광학현미경을 이용한 미세구조적 분석을 실시하였다. 그 결과, 25% 대체군에서 간중량지수가 가장 높고 간 지방함유율이 가장 낮은 점으로부터 25% 대체군의 간의 우수한 건강성이 시사되었다. 또한 근섬유의 단면적도 25% 대체군이 가장 넓게 나타나, 운동성 또한 우수한 것으로 추측되었다. 즉 간 및 근육의 우수한 건강 상태가 높은 증체율을 나타내는데 영향을 미쳤음을 알 수 있었다. 한편, 증체율이 낮은 75% 및 100% 대체군에서는 간건강 및 근섬유의 발달이 좋지 못했는데, 이는 발효어분이 일정 비율 이상 포함될 경우 넙치의 건강에 좋지 않은 영향을 미칠 수 있음이 시사되었다.

Keywords

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